发明授权
- 专利标题： LED device and LED driver
- 专利标题（中）： LED装置和LED驱动器
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申请号： US12469206申请日： 2009-05-20
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公开(公告)号： US08120283B2公开(公告)日： 2012-02-21
- 发明人: Shinichi Tanaka , Kiyoshi Narisawa
- 申请人： Shinichi Tanaka , Kiyoshi Narisawa
- 申请人地址： US TX Dallas
- 专利权人： Texas Instruments Incorporated
- 当前专利权人： Texas Instruments Incorporated
- 当前专利权人地址： US TX Dallas
- 代理商 William B. Kempler; Wade J. Brady, III; Frederick J. Telecky, Jr.
- 优先权： JP2008-131784 20080520
- 主分类号： H05B37/02
- IPC分类号： H05B37/02
摘要：
A LED device having a LED array, LED driver ICs, DC-DC converter, a first feedback circuit consisting of voltage dividing resistors, and a headroom voltage monitoring circuit having controller and second feedback circuit. In second feedback circuit, headroom voltages obtained at output current terminals of the LED driver ICs, are fed back to DC-DC converter.
公开/授权文献
- US20090289559A1 LED DEVICE AND LED DRIVER 公开/授权日：2009-11-26